2HNO3 + Ca(OH)2 ==> Ca(NO3)2 + 2H2O
<span>mols Ca(OH)2 = M x L = ? </span>
<span>Using the coefficients in the balanced equation, convert mols Ca(OH)2 to mols HNO3. </span>
<span>Then M HNO3 = mols HNO3/LHNO3. You have mols and M, solve for L.</span>
Molar mass of A l 2 (S O 4 ) 3 = 342.15 g/mol
7.2g/ 342.15 g/mol
you can get number of moles.
then multiply that by12
Answer:
0.091 mol/L
Explanation:
Molarity of a substance , is the number of moles present in a liter of solution .
M = n / V
M = molarity ( unit = mol / L or M )
V = volume of solution in liter ( unit = L ),
n = moles of solute ( unit = mol ),
Moles is denoted by given mass divided by the molecular mass ,
Hence ,
n = w / m
n = moles ,
w = given mass ,
m = molecular mass .
From the data of the question , it is given that ,
w = 1.5 g
V = 220 mL
Since ,
1 mL = 1/1000L
V = 0.220 L
As we known , the mass of bleach NaOCl is ,
m = 74.44 g/mol
from the above equation , moles can be calculated as -
n = w / m
n = 1.5g / 74.44 g/mol
n = 0.0201 mol
Molarity of the solution is calculated as ,
M = n / V
M = 0.0201 mol / 0.220 L
M = 0.091 mol/L
The first shell is full at 2 electrons, the next 2 shells are full at 8 electrons, and any shells after that are full at 16 electrons
NO
The speed/.velocity will be decreasing
Explanation:
Acceleration is defined by the following equation;
a = delta-V / delta-T
Whereby;
A = acceleration
Delta-V= change in Velocity
T = change in Time
In ouer case we are sure that the value of a is negative because acceleration is decreasing. On the other hand, change in time is positive in our case because time is increasing (i.e moving forward)
Therefore to achieve a negative a (i.e -a), the delta-V must be negative;
Delta-v = V (final) – V (initial)
For a negative delta-V to be achieved, then the final velocity must be lower than the initial velocity
Learn More:
For more on acceleration equations check out;
brainly.com/question/1852158
brainly.com/question/12904893
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